Dan Simmons (April 4, 1948 – February 21, 2026 ) was an American science fiction and horror writer. He was the author of the Hyperion Cantos and the Ilium/Olympos cycles, among other works that span the science fiction, horror, and fantasy genres, sometimes within a single novel. Simmons's genre-intermingling Song of Kali (1985) won the World Fantasy Award. He also wrote mysteries and thrillers, some of which feature the continuing character Joe Kurtz. **Source**: [Dan Simmons](https://en.wikipedia.org/wiki/Dan_Simmons) on Wikipedia. See also: https://www.dignitymemorial.com/obituaries/longmont-co/daniel-simmons-12758871
